Primers for diagnosing avellino corneal dystrophy

a technology of corneal dystrophy and primers, applied in biochemistry apparatus and processes, organic chemistry, sugar derivatives, etc., can solve the problems of corneal dystrophy, eye loss, serious troubles in both society and economics, etc., and achieve the effect of more efficiently and accurately diagnosing avellino corneal dystrophy

Inactive Publication Date: 2012-03-29
AVELLINO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009]A main object of the present invention is to provide a primer pair and probe for more efficiently and accurately diagnosing Avellino corneal dystrophy using a real-time PCR method.

Problems solved by technology

Patients who have undergone LASIK surgery are mainly in their 20's and 30's carrying out productive activities; therefore, their vision loss causes serious troubles in both society and economics.
Therefore, although accurate diagnosis of Avellino corneal dystrophy is required to prevent the progression of Avellino corneal dystrophy by LASIK surgery, the diagnosis of Avellino corneal dystrophy is just conducted by microscopic observation of corneal opacity and thus often doctors miss latent symptoms of patients to perform LASIK surgery, which results in vision loss.
However, the diagnosis of Avellino corneal dystrophy using said DNA chip disadvantageously require several steps, including a step of amplifying DNA in a sample, a step of hybridizing the amplified DNA with the DNA chip, a step of washing the hybridized DNA chip, and a step of detecting a positive response.

Method used

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  • Primers for diagnosing avellino corneal dystrophy
  • Primers for diagnosing avellino corneal dystrophy
  • Primers for diagnosing avellino corneal dystrophy

Examples

Experimental program
Comparison scheme
Effect test

example 1

Construction of Real-Time PCR Primers and MGB Probes

[0023]In order to construct primers capable of amplifying a region comprising a mutation in exon 4 of BIGH3 gene, pairs of primers of SEQ ID NOs: 1 and 2, SEQ ID NOs: 3 and 4, SEQ ID NOs: 5 and 6, SEQ ID NOs: 7 and 8, SEQ ID NOs: 9 and 10, SEQ ID NOs: 11 and 12, SEQ ID NOs: 13 and 14, SEQ ID NOs: 15 and 16, SEQ ID NOs: 17 and 18, SEQ ID NOs: 19 and 20, SEQ ID NOs: 21 and 22 and SEQ ID NOs: 23 and 24 were designed using Primer Express 3.0 software (Applied Biosystems U.S.A).

ACD Fw primer:(SEQ ID NO: 1)5′-TCC ACC ACC ACT CAG CTG TAACD Re primer:(SEQ ID NO: 2)5′-CCA TCT CAG GCC TCA GCT T(60 bp)AV Fw primer:(SEQ ID NO: 3)5′-TGC AGC CCT ACC ACT CTC AAAV Re primer:(SEQ ID NO: 4)5′-AGG CCT CGT TGC TAG G(150 bp)Real Fw primer:(SEQ ID NO: 5)5′-TAG TCT CTT ATT CTA ATA GAReal Re primer:(SEQ ID NO: 6)5′-GCT GCA GAC TCT GTG TTT AA(860 bp)ACD Fw2 primer:(SEQ ID NO: 7)5′-CCA TCC CTC CTT CTG TCT TCT GACD Re2 primer:(SEQ ID NO: 8)5′-CGG GCC CCT CCA...

example 2

Diagnosis of Avellino Corneal Dystrophy Using Real-Time PCR

[0026]Samples were taken from the blood, hair root and oral epithelial cells of test subjects, and DNA was isolated from the samples. The isolation and purification of DNA were performed using a partial modification of the phenol / chloroform extraction method (Miller, SA et al., Nucl. Acids Res. 16:1215, 1988), and the isolated DNA was dissolved in a suitable amount of TE buffer (10 mM Tris-Cl, 1 mM EDTA, pH7.4) and confirmed by electrophoresis on 1% agarose gel and used as template DNA in PCR.

[0027]The PCR reactions were performed using the primers (SEQ ID NOs: 1 to 12) for amplifying the fragment containing the mutation region, and the probes (SEQ ID NOs: 13 to 24), constructed in Example 1.

[0028]25 μg of a master mix containing 10 pmol of each primer and 5 pmol of each probe was prepared and used in the PCR reaction.

[0029]The real-time PCR reaction was performed in the following conditions: 36 cycles each consisting of 10 ...

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Abstract

The present invention relates to a real-time PCR primer pair and probe for diagnosing Avellino corneal dystrophy, and more particularly to a real-time PCR primer pair and probe for diagnosing Avellino corneal dystrophy, which can accurately diagnose the presence or absence of a mutation in exon 4 of BIGH3 gene, which is responsible for Avellino corneal dystrophy. The use of the primer pair and probe according to the invention can diagnose Avellino corneal dystrophy in a more rapid and accurate manner than a conventional method that uses a DNA chip or PCR.

Description

TECHNICAL FIELD[0001]The present invention relates to a real-time PCR primer pair and probe for diagnosing Avellino corneal dystrophy, and more particularly to such a real-time PCR primer pair and probe for diagnosing Avellino corneal dystrophy, which can accurately diagnose the presence or absence of a mutation in exon 4 of BIGH3 gene, which is responsible for Avellino corneal dystrophy.BACKGROUND ART[0002]Corneal dystrophy is an autosomal dominant hereditary disease, which begins with a blurry symptom in the center of cornea and gradually spreads and thus ends up vision loss as a patient gets older. It includes Avellino corneal dystrophy, Granular corneal dystrophy, lattice type I corneal dystrophy, Reis-bucklers corneal dystrophy, etc., and is caused by mutation of a gene coding βIG-H3 protein.[0003]Heterozygous patients suffering from Avellino corneal dystrophy appear to have severe loss of vision as getting older and homozygous patients appear to have complete loss of vision si...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C12Q1/68C07H21/00
CPCC12Q1/686C12Q1/6883C12Q2600/156C12Q2561/113C12Q1/6844C12Q2531/113C12N15/11C12Q2600/112
Inventor LEE, GENEYUN, JUNG KUK
Owner AVELLINO
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